The old jasoos bani would have seen through the plan was is JW in place of Ad. rember how she tortured him during PR raaz going through tiniest clues.
Here the clues are flashing right in front of her 7 she doesn't get it.
First of all Jigs tells her that Jai was reluctant to get married & it was Pia who pushed for it. Then she doesn't notice the Walia clan who is gleaming with joy when its her & not Pia uner the ghoonghat. what if Jai is shocked he doesn't seemed to be mad like he was for te first one.
Lastly the most obvious. Why would Jia & Pia go to the Turkey honeymoon where Apaarajit said that he might take Bani & said the whole dialogue indicating Jai's raaz. Shouldn't she see that this is AD's plan. Old Bnai would have bumbarded Ad with questions with mere mention of Turkey. Wouldn't leave him untill she got answers. That would have made AD run for life & rethink about marrying her😆. Who cares for MIL's wishes.
But alas our dear jasoos bani is missing & we have braindead hypnotised Durga.